与人们的共识相反，北极光并非仅仅是北极冬季里的光亮现象。
Contrary to widely held belief, the aurora borealis is not strictly a phenomenon of winter lights in the Arctic.
比如，绿色北极光源自于60到120英里(100到200公里)高的氧原子的碰撞。
For example, the green aurora pictured was the result of oxygen-atom collisions about 60 to 120 miles (100 to 200 kilometers) up.
北极光灿烂地显示在加拿大西北地区耶洛奈夫附近的天空里。
The northern lights, or aurora borealis, produce a brilliant display in the skies near Yellowknife, Northwest Territories, Canada.
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